After years of caving to industry pressure, the feds finally classify formaldehyde as a carcinogen.

This Ecobatt insulation was one of the first formaldehyde-free fiberglass products on the market. The U.S. government has just reclassified formaldehyde as a known human carcinogen; fiberglass insulation itself remains in the “reasonably anticipated to be a human carcinogen” category, but with a new caveat.